Processors

[aynmeme]

I have a Ryzen 7 7735HS processor on my Asus TUF A15 2023 (FA507NV) laptop which has 2 X 8GB DDR5-4800 RAM sticks installed in it. I am now trying to upgrade RAM but I have been getting mixed info online with regards to actual maximum ram frequency supported by this processor. some say i could go as up as using a DDR5-5600 but others say even if i install such a high frequency RAM it'll clock it down to 4800 in practical usage and so no actuall value of having a RAM operating at a higher frequency. 
For example on Crucial's website (and many other similar websites selling RAM) the 5600 RAM is listed as supported by my Laptop model/processor (https://www.crucial.com/compatible-upgrade-for/asus/asus-tuf-gaming-fa507nv) but then on the datasheet of the processor on AMD's own website i dont see that (https://www.amd.com/en/products/apu/amd-ryzen-7-7735hs).
In fact according to AMD:

Max Memory Speed

4x1R    DDR5-4800

4x1R    LPDDR5-6400

I'm confused ...
Does anyone have an experience with RAM compatibility of this processor and has possibiliy a final word or what would be the real maximum frequency supported by it in practical use?
Many thnaks in advance

[2DEZstb]

AMD releases up to 4x1R LPDDR5-6400.
The strongest and only one I could find is this
Kingston FURY Impact 32GB Kit DDR5-6400 CL38 (KF564S38IBK2-32)
for 16gb the two
Crucial 16GB Kit DDR5-5600 CL46 (CT2K8G56C46S5) or
Kingston ValueRAM 16GB Kit DDR5-5600 CL46 (KVR56S46BS6K2-16)
as well as various 5200 in 2x8gb or 2x16gb variants.
They'll work, but I doubt whether you'll really get and recognize any noticeable added value.
Conclusion..leave it as it is, that guarantees you stability and unnecessary expenses.
greetings

[aynmeme]

Thanks, but im definitely not going to leave it as it is as I am short in RAM. I'm thinking of upgrading my 16 Gb (2 X RAM and since i already read of success stories of 64Gb (2 x32) on my machine and with this processor, i was trying to decide whether i should stay with 4800 or go up to over 5000 ones.  but what im not sure of is whether i would feel the difference which you are saying not but ive read some people claiming these clock differences matters a lot (of course depending on application). Also the price difference is quite significant as you go from 4800 to say 5600. so you'd think there should be some good reason for this price jump.

[misterj]

aynmeme, I am confused also. It is hard to believe Laptop memory is faster than desktop memory. There is something they are not telling us. I suspect it has to do with the actual configuration of the sticks. Samsung and Micron and probably many more manufacturers have parts that are 6400 Mbps. The 4800 in DDR5-4800 is MTps (mega transfers per second). I suspect the LPDDR5-6400 that the 6400 means 6400Mbps. Lower case b means bits not bytes. Enjoy, John.

[FunkZ]

If this was a desktop, you would go to the motherboard manufacturer QVL list to see what memory configurations they support.

Since this is a laptop, you should ask Asus what memory speed they support on this model. Does their BIOS allow XMP/EXPO?